Schulman Mosquito XEL near Halifax, MA — 2010-09-19
- Date
- 2010-09-19
- Location
- Halifax, MA, USA
- Aircraft
- Schulman Mosquito XEL
- Registration
- UNREG
- Category
- Helicopter
- Highest injury
- Fatal
- Fatalities
- 1
- Phase of flight
- Maneuvering
Probable cause
The pilot's loss of control while hovering. Contributing to the accident was the pilot’s limited experience operating the helicopter make and model.
Contributing factors
Contributing to the accident was the pilot’s limited experience operating the helicopter make and model.
NTSB narrative
The ultralight helicopter was observed flying low over a lake and then hovering over a swamp area with trees. When the helicopter was hovering just above the trees, the tail section yawed left and right, followed by the main rotor blades tipping left and right. The helicopter then entered a spin and nosed over and impacted the trees. A postaccident examination did not reveal any evidence of failures of the helicopter or its components that would have prevented normal operations prior to impact. The pilot purchased the helicopter as a kit and constructed it at the manufacturer's facility with their assistance. Before it was completely built, the pilot departed the facility with the helicopter and declined to receive 10 hours of flight instruction offered by the kit manufacturer. The pilot had his Federal Aviation Administration (FAA) medical certificate revoked 3 years prior to the accident and did not hold a helicopter rating. However, the pilot may have had experience in another type of helicopter and may have accumulated about 12 hours of flight time in the accident helicopter prior to the accident.
Analysis
- Primary failure mode
- Human factors
- First missed decision gate
- Pilot declined training despite lack of helicopter rating and experience.
NTSB coding
Evidence available
- Photos
- 15 docket documents
Docket documents15
- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1form
- Reports from Parties to the Investigation: Federal Aviation Administration Inspector's Statement.interview
- Reports from Parties to the Investigation: Federal Aviation Administration Inspector's Statement.interview
- Statement of Party Representatives to NTSB Investigationinterview
- Miscellaneous: Excerpts From The XE Operator Manual, Jun 2010.other
- Miscellaneous: Excerpts from the XE Operator Manual Introduction, Jun 2010.other
- Miscellaneous: Excerpts of the XE Operator Manual Emergency Procedures Section, Jun 2010.other
- Miscellaneous: Mosquito Ultrlight Helicopter Height-Velocity Diagram.other
- Photo 1) Front View of Helicopter at the Airport on the day of the Accident. Photo Provided by the Halifax Police Department.photos
- Photo 2) Right Rear View of Helicopter at the Airport on the day of the Accident. Photo Provided by the Halifax Police Department.photos
- Photo 3) View of Trees Directly Over the Wreckage Area. Note, a Section of the Helicopter Caught on a Tree Branch. Photo Provided by the Halifax Police Department.photos
- Photo 4) View of Wreckage After Ground Impact. Photo Provided by the Halifax Police Department.photos
- Photo 5) View of Wreckage Among the Ground Vegetation. Photo Provided by the Halifax Police Department.photos
- Photo 6) View of Recovered Wreckage Debris. Photo Provided by the Halifax Police Department.photos
- Reports from Parties to the Investigation: Mosquito XE Accident Investigation Report.report
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